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Finding the Fourth Proportional to 290,364.72, 399,776.41 and 247,752.24

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Solution

The fourth proportional to 290,364.72, 399,776.41 and 247,752.24 is: 341,107.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,364.72 : 399,776.41 = 247,752.24 : x
  2. Step 2: Convert to fraction form
    290,364.72/399,776.41 = 247,752.24/x
  3. Step 3: Cross multiply
    290,364.72x = 399,776.41 × 247,752.24
  4. Step 4: Simplify right side
    290,364.72x = 99,045,497,839.02
  5. Step 5: Solve for x
    x = 99,045,497,839.02/290,364.72
  6. Step 6: Final answer
    x = 341,107.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.